I would recommend the following two items:
Do not repot until the plant is starting new growths. That way the new roots that come with the new growth will become acclimated to the constantly-moist environment and can support the plant. Its current roots are likely to die after that change. I would speculate that the new growth will commence in the spring.
Get a seed-starting heat mat, and after repotting, keep it on the mat to warm the medium and root zone. That will accelerate the root growth and the plant's establishment.
Ray Barkalow, Orchid Iconoclast
Using science and logic to advance orchid growing
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